CN205676750U - Deteriorated concrete pavement repaving asphalt coat Crack Control structure - Google Patents

Deteriorated concrete pavement repaving asphalt coat Crack Control structure Download PDF

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Publication number
CN205676750U
CN205676750U CN201620375172.1U CN201620375172U CN205676750U CN 205676750 U CN205676750 U CN 205676750U CN 201620375172 U CN201620375172 U CN 201620375172U CN 205676750 U CN205676750 U CN 205676750U
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China
Prior art keywords
reinforcing bar
shaped reinforcing
concrete pavement
crack
deteriorated concrete
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CN201620375172.1U
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Chinese (zh)
Inventor
傅大宝
李玉华
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Fuzhou planning and Design Institute Group Co.,Ltd.
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Fuzhou Planning Design and Research Institute
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Abstract

The open a kind of Deteriorated concrete pavement repaving asphalt coat Crack Control structure of this utility model, two row's square grooves (8) are dug at adjacent old cement sheeting periphery, it is inserted into U-shaped reinforcing bar (4) at adjacent two square grooves (8), U-shaped reinforcing bar (4) connects reinforcing bar (7) to strengthen the lateral ties of U-shaped reinforcing bar (4) two-by-two, in square groove (8), it is filled with Colophonium (6), and is equipped with bitumen layer (1) at U-shaped reinforcing bar (4) and reinforcing bar (7) surface.This utility model can not only reduce the stress concentration that old cement concrete road seam crossing produces under load and temperature action, is prevented effectively from the generation of reflection crack, and simple in construction, speed of application are fast, workable.

Description

Deteriorated concrete pavement repaving asphalt coat Crack Control structure
Technical field:
This utility model relates to a kind of Deteriorated concrete pavement repaving asphalt coat structure, especially can control asphalt overlay anti- Penetrate crack to produce.
Background technology
At present, China's cement concrete pavement has quite a few near or above design period, though have is not up to Design period, but owing to the volume of traffic increases severely, automobile shafts heavy type and the reason of the aspect such as design, construction, cause cement pavement Damage, have impact on the serviceability of road.On Deteriorated concrete pavement surface layer, Paving Bituminous Concrete is to improve pavement usage A kind of feasible method of energy.But, practice finds, is easily generated reflection at Old cement concrete seam crossing asphalt overlay and splits Seam, causes overlay shortening in service life.Therefore, how controlling reflection crack is the successful key point of asphalt overlay.
Reflective Crack in Asphalt Overlays can be divided into temperature mode crack and Load Crack.Thermal reflective cracking refers to Colophonium Overlay and old cement concrete road contraction or expansion under temperature action, causes asphalt surface course to produce temperature stress, thus causes anti- Penetrate crack to occur.Load Crack refers under Driving Loading, and it is poor that plate seam both sides produce relative vertical displacement, and Colophonium adds Shear stress in laying increases, thus produces reflection crack.
At present, the prevention and cure of crack method used both at home and abroad mainly has increase asphalt overlaying layer thickness, sandwich establishment etc..Overlay Although asphalt overlay can the development in delayed reflex crack, but road surface cost will be increased considerably, and when summer high temperature It is easily generated rut;Sandwich establishment is the most different according to the rigidity role of interlayer in terms of reducing reflection crack.Soft interlayer exists Reduce in the reflection crack that temperature causes and can play an important role, but effect is little in terms of reducing load stress, in some instances it may even be possible to There is harmful effect, and hard interbedded layer is maximally efficient to the reflection crack reducing load generation, but the reflection crack side caused in temperature Face is effective not as soft interlayer.Therefore, the most not yet there are the technical measures of a kind of generally acknowledged preventing and treating reflection crack good results.
Summary of the invention
In order to control the generation of Deteriorated concrete pavement repaving asphalt coat reflection cracking in a pavement, this utility model provides a kind of new Type pavement structure, this pavement structure can effectively reduce the stress of asphalt overlay at plate seam and concentrate.
The technical scheme that this utility model provides is:
This utility model Deteriorated concrete pavement repaving asphalt coat Crack Control structure, it is characterised in that: at adjacent old cement Plate periphery digs two row's square grooves, is inserted into U-shaped reinforcing bar, two-by-two U-shaped bar connecting reinforcing bar at two adjacent square grooves To strengthen the lateral ties of U-shaped reinforcing bar, square groove is filled with Colophonium, and is equipped with drip at U-shaped reinforcing bar and rebar surface Cyan layer.
Further, above-mentioned square groove is 50mm × 50mm, the degree of depth 100 ~ 200mm.
Further, above-mentioned U-shaped reinforcing bar is the spiral of diameter 8 ~ 14mm.
The construction method of this utility model Deteriorated concrete pavement repaving asphalt coat Crack Control structure:
(1) dig two row's square grooves at adjacent boards block periphery, insert U-shaped reinforcing bar so that road surface is at traffic load Under effect, U-shaped reinforcing bar undertake shear stress, reduce asphalt surface course generation vertical stress and concentrate;
(2) use connect reinforcing bar strengthen U-shaped reinforcing bar lateral ties so that shear stress can transverse distribution to each U-shaped Reinforcing bar, reduces the shear stress that U-shaped reinforcing bar undertakes;
(3) what cement pavement breathing produced draw/and compressive stress undertakes by U-shaped reinforcing bar, it is to avoid and asphalt overlay produces temperature should Power is concentrated.Meanwhile, filled bitumen in square groove, reduces U-shaped reinforcing bar to constraint during cement pavement breathing, it is to avoid at plate Middle generation thermal cracking.
The beneficial effects of the utility model are: can not only reduce old cement concrete road seam crossing under load and temperature action The stress produced is concentrated, and is prevented effectively from the generation of reflection crack, and simple in construction, speed of application are fast, workable.
Accompanying drawing illustrates:
Fig. 1 is the schematic longitudinal section of this utility model Deteriorated concrete pavement repaving asphalt coat Crack Control structure;
Fig. 2 is the road surface schematic diagram of this utility model Deteriorated concrete pavement repaving asphalt coat prevention and cure of crack structure.
Label declaration: 3 is roadbase.
Detailed description of the invention:
This utility model Deteriorated concrete pavement repaving asphalt coat Crack Control structure, digs at adjacent old cement sheeting periphery Two row's square grooves 8, are inserted into U-shaped reinforcing bar 4 at two adjacent square grooves 8, and U-shaped reinforcing bar 4 connects reinforcing bar 7 to strengthen U two-by-two The lateral ties of shape reinforcing bar 4, are filled with Colophonium 6 in square groove 8, and are equipped with Colophonium at U-shaped reinforcing bar 4 and reinforcing bar 7 surface Layer 1.
Square groove 8 is 50mm × 50mm, the degree of depth 100 ~ 200mm;U-shaped reinforcing bar 4 is the spiral of diameter 8 ~ 14mm.
It is as follows that this utility model is embodied as step:
(1) as in figure 2 it is shown, digging two row edges away from Deteriorated concrete pavement panel crack 5 certain distance (1-20 centimetre) place The square groove 8 in direction, crack 5, square groove 8 is symmetric along crack 5, and square groove 8 should go deep into cement concrete slab 2 certain distances (100 ~ 200mm);
(2) being inserted by U-shaped reinforcing bar 4 in the square groove 8 of symmetry, U-shaped reinforcing bar 4 is perpendicular to crack 5;
(3) connect reinforcing bar 7 along U-shaped reinforcing bar 4 colligation, connect reinforcing bar 7 and be perpendicular to U-shaped reinforcing bar 4;
(4) Colophonium 6 is used to fill square groove 8;
(5) making bitumen layer 1 on Old cement concrete 2.

Claims (3)

1. a Deteriorated concrete pavement repaving asphalt coat Crack Control structure, it is characterised in that: at adjacent old cement sheeting periphery Digging two row's square grooves (8), be inserted into U-shaped reinforcing bar (4) at adjacent two square grooves (8), U-shaped reinforcing bar (4) connects two-by-two Reinforcing bar (7), to strengthen the lateral ties of U-shaped reinforcing bar (4), is filled with Colophonium (6) in square groove (8), and in U-shaped reinforcing bar (4) It is equipped with bitumen layer (1) with reinforcing bar (7) surface.
Deteriorated concrete pavement repaving asphalt coat Crack Control structure the most according to claim 1, it is characterised in that: described side Connected in star (8) is 50mm × 50mm, the degree of depth 100 ~ 200mm.
Deteriorated concrete pavement repaving asphalt coat Crack Control structure the most according to claim 1, it is characterised in that: U-shaped steel Muscle (4) is the spiral of diameter 8 ~ 14mm.
CN201620375172.1U 2016-04-28 2016-04-28 Deteriorated concrete pavement repaving asphalt coat Crack Control structure Active CN205676750U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620375172.1U CN205676750U (en) 2016-04-28 2016-04-28 Deteriorated concrete pavement repaving asphalt coat Crack Control structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620375172.1U CN205676750U (en) 2016-04-28 2016-04-28 Deteriorated concrete pavement repaving asphalt coat Crack Control structure

Publications (1)

Publication Number Publication Date
CN205676750U true CN205676750U (en) 2016-11-09

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CN201620375172.1U Active CN205676750U (en) 2016-04-28 2016-04-28 Deteriorated concrete pavement repaving asphalt coat Crack Control structure

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108049651A (en) * 2017-12-22 2018-05-18 武汉固立达建筑科技有限公司 A kind of distress in concrete blocking method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108049651A (en) * 2017-12-22 2018-05-18 武汉固立达建筑科技有限公司 A kind of distress in concrete blocking method

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Address after: Municipal Administration Institute of Fuzhou planning and Design Institute, No.1, Gaoxin Avenue, Gaoxin District, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350108

Patentee after: Fuzhou planning and Design Institute Group Co.,Ltd.

Address before: Municipal Administration Institute of Fuzhou planning and Design Institute, No.1, Gaoxin Avenue, Gaoxin District, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350108

Patentee before: FUZHOU PLANNING DESIGN & Research Institute